WMSIC Electronic Components

ROHM LTR18EZPJ7R5

ModelLTR18EZPJ7R5
Package0612
BrandROHM
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration 26+

Available for RFQ

Technical data

Product details

20 specifications

Core information

Product name
ROHM LTR18EZPJ7R5
Type
ROHM
Unit
Electronic Component
Minimum package
5000 圆盘

Technical parameters

Power
750mW
Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
ROHM
Electronic Component
LTR18EZPJ7R5
Electronic Component
1
Package
0612
Electronic Component
SMD Resistor
Electronic Component
±5%
Electronic Component
0.031g
Electronic Component
7.5Ω
Electronic Component
1
Electronic Component
BM0058425061
Operating Temperature
55℃~+155℃
Electronic Component
±200ppm/℃
Resistor Type
Resistor

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

ROHM罗姆LTR18EZPJ7R5厚膜贴片电阻产品概述

一、产品核心身份与封装规格

ROHM(罗姆)作为日系知名半导体厂商,其推出的LTR18EZPJ7R5属于厚膜贴片电阻系列,定位为小体积、中等功率的通用型电阻。该型号采用0612封装(对应尺寸约0.6mm×1.2mm,英制规格),是罗姆针对高密度PCB设计优化的小型化封装之一,兼顾紧凑性与功率承载能力,适配消费电子、工业控制等多领域的轻薄化设备需求。

二、关键电气性能参数详解

LTR18EZPJ7R5的核心电气参数明确了其应用边界,具体如下:

  • 阻值:固定7.5Ω,属于低阻范畴,适合电流采样、限流等低阻场景;
  • 精度:±5%,为工业级标准精度,满足大多数非精密电路的匹配要求(如电源分压、信号衰减);
  • 额定功率:750mW(0.75W),在0612小封装下功率表现优异,远高于同尺寸薄膜电阻的常规功率上限;
  • 温度系数(TCR):±200ppm/℃,即温度每变化1℃,阻值波动约±0.0002%,结合**-55℃~+155℃的宽工作温度范围**,可稳定适配户外、车载等极端温变环境;
  • 环保合规:符合RoHS无铅标准,支持无铅焊接工艺,满足全球电子设备的环保要求。

三、工艺与可靠性特性

该电阻采用厚膜丝网印刷工艺:以陶瓷基底为载体,通过高精度丝网印刷电阻浆料(如钌系浆料),经高温烧结成型,相比薄膜电阻具有以下优势:

  1. 功率承载能力强:厚膜层厚度远大于薄膜,可有效分散功率损耗,降低热应力;
  2. 耐脉冲性能好:适合承受短时间过流脉冲(如电机启动瞬间的浪涌);
  3. 成本可控:比薄膜电阻更具性价比,适合大规模量产应用。

可靠性方面,罗姆对该系列电阻进行了严格测试:通过JIS C 5201、IEC 60115等国际标准的温度循环(-55℃~+155℃循环1000次)、湿度测试(85℃/85%RH下1000小时)、负载寿命测试(额定功率下1000小时阻值变化≤±1%),确保长期恶劣环境下的稳定性。

四、典型应用场景

结合参数特性,LTR18EZPJ7R5的核心应用场景包括:

  • 消费电子:智能手机、平板电脑的电源管理电路(如电池充放电限流、DC-DC转换模块的电流采样),小体积适配设备轻薄化;
  • 工业控制:小型电机驱动电路的电流检测(7.5Ω配合运放可实现0.5A-2A范围内的电流采样)、传感器信号调理电路(如温度传感器的分压偏置);
  • 车载电子:车载中控、车灯控制电路(宽温范围适配-40℃~+85℃的车载环境)、ADAS系统的辅助电路;
  • 通信设备:小型基站、路由器的电源滤波、限流电路,高密度封装支持设备小型化集成。

五、选型与使用注意事项

  1. 功率降额:实际使用功率建议不超过额定功率的80%(即600mW),高温环境(如155℃)下需进一步降额至50%以下,避免电阻过热老化;
  2. 焊接规范:无铅回流焊峰值温度≤260℃,焊接时间≤10秒;手工焊接温度≤350℃,时间≤3秒,防止封装或电阻体损坏;
  3. 精度匹配:若应用需更高精度(如±1%),可选择同系列LTR18EZPJ7R5F(F代表±1%精度);
  4. 存储条件:建议存储在1535℃、4060%RH的环境中,避免长期暴露在高湿、高盐雾环境下,防止引脚氧化。

LTR18EZPJ7R5凭借小体积、中等功率、宽温稳定等特性,成为罗姆厚膜贴片电阻系列中的通用型主力型号,可覆盖多领域的常规电阻需求,是工业与消费电子设计的可靠选择。

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